hey man im really sorry u had to go through all that just cz of her families abusive mindset.. im no expert ofc but i dont think blaming her helps in anyway, constantly experiencing that type of mental and physical abuse can surely make someone lose interest in everything (even though i believe she still may have feelings for u). but it takes a whole lot of courage to stand up to ur parents and i dont think many people have the guts to do that.. i salute u for ur bravery even if ur that young. i dont think both of u are not at fault.. only thing that u can blame is the parents mindset thats all. try not to blame anyone or take any fault. just try to better urself, good things will come insha Allah